Why do You Need a SharePoint Intranet?
Almost all organizations want an Intranet and primarily need it for private document management and collaboration inside the organization, but they also need to share files and content with vendors, partners, and customers. Moreover, by building a SharePoint Intranet across your organization, you can gain control over mismanaged content as well as reduce the risk of data leakage.
Employees and leadership can all share information across the board and work towards a common goal. And even if you begin with a simple Intranet, it can evolve as your company does.